SOURCE: towing with automatic in overdrive
YES! The owners manual states explicitly that "O/D Off" should be engaged whenever you are towing, I always ignored it for towing under 3000 lbs. The only way I would try it with our 4R100's is with a 4-5 plate Torque Converter Clutch and a Wood/IPT/BCS/Banks rebuilt unit running a separate cooler. The problem originated when Ford shifted to a Pulse Width Modulated (not just on/off) Torque Converter Clutch solenoid for "smoother" shifting. The increased slip in these clutches resulted in faster wear and higher heat levels... and blown solenoid packs. Another $150 down.
PS. You will not see any change in the tranny temp gage in the dash until the temp is well over 230F... too hot for Mercon! Get an aftermarket gage pod to keep an eye on things.
SOURCE: 1999 nissan frontier overdrive problem
juan: there is a cable which comes from the transmission to the throttle linkage. This is called the TV (throttle valve) cable. This is designed to work in conjunction with the position of the throttle. I'm sure you heard the term "KICK DOWN SWITCH". Well this essentially is doing the same thing. If the cable is out of adjustment, it will have a tendency to want to downshift into 3rd.
Even though overdrive is electrically actuated, it can be disengaged by the throttle position.
There is also a coolant temp sensor which keeps the transmission from shifting into overdrive until the coolant temperature reaches a certain point. The sensor tells the ECM to tell the Solenoid it's ok to supply a ground to it.
Your overdrive switch provides a ground to actuate the overdrive solenoid. Make sure the switch has a solid ground serving the circuit.
The torque converter solenoid picks up it's ground from the ECM.
Both solenoids are served by the same power source which is a switched circuit through the ignition.
I hope I have shed some new light on your problem and given you some new direction in which to look. I hope I have helped you resolve your problem. If not, I'll be watching and will be ready to offer more help if needed. ..mybunkey
SOURCE: my 2002 Chrysler Sebring LX Convertible had the
The check engine light came on probably because it detected an error with your car. In this case, it sounds like the error is with your transmission. Most likely a bad solenoid. Bring the car to a place like Autozone where they will scan your car for free to retrieve the code(s) that will point to where the issue is.
SOURCE: 2003 CHRYSLER 300M SPECAIL REPLACED VALVE BODY AND
Needs to relearn shift stratagies. May need scan tool help If trans shop did work take it back. Don't forget to use the right fluid. Even trans shops don't care.
SOURCE: How do i tell if my clutch packs are slipping or
Hook up scanner and go on road test. Only the start of the process. Leave it to the pros
http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html
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Automatic transmission shift lever
issues?-------
http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html
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AUTOMATIC TRANSMISSION FLUID LEVEL? --
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html
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AUTOMATIC TRANSMISSION FLUID AND
FILTER?
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html
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Transmission fault light on
car dash?
http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html
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Transmission shifting
problem?
http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html
--------
Transmission Slips out of 2nd gear?
http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html
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OD light flashing and transmission fluid
leaking?
http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html
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Why Transmission fluid leaks near radiator?
http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html
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Transmission fluid leaking?
http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html
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****** wont go in reverse?
http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html
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Automatic transmission will not go into
reverse?
http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html
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Transmission is making buzzing noise?
http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html
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This
will help.
Thanks.
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